Problem solved it is problem in codecs ffdshow and i dont know why,but when i unistal BS player with Revo uninstaler and instal BS player again,but this time without codecs thats BS player ask do you want to BS p. find and instal codecs for you.And now BS is working superbly every time.I forgot to say that in my comp is instaled Windows 7 ultimate 32,maybe BS doesnt work fine with ffdshow codec in W. 7 ultimate.I hope that this thread will help someone with same problem because i lose my mind with it.Thanks God thats finish now.Cheers